Off-Road Compression-Ignition Engine Regulatory and Certification Documents
This page last reviewed February 24, 2011
Background
This page provides a list of the
Manufacturers
Advisory Correspondence (MACs), regulation, test procedures, and
guidelines applicable to Off-Road Compression-Ignition Engines, and is
primarily for the interest and needs of manufacturers and others that
are required to obtain certification from ARB. In addition,
certification database and Executive Orders can be accessed on-line by
clicking on the links provided below. For public-oriented
materials, please visit our Compression-Ignition Engines main program
page.
- Regulations, Test Procedures, and Policies
- Manufacturers Advisory Correspondence
- Mobile Source Mailouts
- Executive Orders
- FAQ
- Stay Informed
- Related Links
- Contact Us
Regulations, Test Procedures, and Policies
California's emission standards for off-road compression-ignition engines are contained in California Code of Regulations, Title 13, and the following test procedures, as incorporated by reference. Section numbers of selected topics are listed for your convenience when performing a search on the regulations web page.
Final Regulation Order, December 7, 2005 (PDF - 301K)
California Exhaust Emission Standards and Test Procedures for New 2000 and Later Later Tier 1, Tier 2, and Tier 3 Off-Road Compression-Ignition Engines, Part I-B (PDF - 83K)
California Exhaust Emission Standards and Test Procedures for New 1996 and Later Tier 1, Tier 2, and Tier 3 Off-Road Compression-Ignition Engines, Part II (PDF - 16K)
California Exhaust Emission Standards and Test Procedures for New 2008 and Later Tier 4 Off-Road Compression-Ignition Engines, Part I-C (PDF - 197K)
Manufacturers Advisory Correspondence
Mobile Source Mailouts
Executive Orders
FAQ
This portion is still under
development; check back soon!
Stay Informed
Please sign up to the new Mobile Source Mailouts and MAC list server.
Related Links
Air Resources Board’s document management system, OpenDMS
Certification Guidelines, CI Engine Manufacturers Certification Guidance Document, applicable for EPA and ARB certification.


